func makeTarget(g *core.BuildGraph, packageName string, labelName string, outputs []string) *core.BuildTarget {
l := core.ParseBuildLabel(fmt.Sprintf("//%s:%s", packageName, labelName), "")
t := core.NewBuildTarget(l)
p := g.Package(packageName)
if p == nil {
p = core.NewPackage(packageName)
g.AddPackage(p)
}
for _, out := range outputs {
t.AddOutput(out)
p.MustRegisterOutput(out, t)
}
p.Targets[labelName] = t
g.AddTarget(t)
return t
}